alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/PSW.LdPinch CnC Checkin"; flow:established,to_server; http.request_line; content:"POST /scripts/view.php "; fast_pattern; http.request_body; content:"a="; startswith; content:"&b="; distance:0; content:"&c="; distance:0; threshold:type limit, track by_src, seconds 180, count 1; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,a57dab3efa58ee43f5ac03e32fb6692b; classtype:command-and-control; sid:2042958; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_12_16, deployment Perimeter, malware_family Win32_PSW_LdPinch, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_16, reviewed_at 2025_01_06;)